<?php
/**
 * Joy Web Framework
 *
 * Copyright (c) 2008-2009 Netology Foundation (http://www.netology.org)
 * All rights reserved.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the LGPL.
 */

/**
 * @package     Joy
 * @subpackage  View
 * @author      Hasan Ozgan <meddah@netology.org>
 * @copyright   2008-2009 Netology Foundation (http://www.netology.org)
 * @license     http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License
 * @version     $Id: $
 * @link        http://joy.netology.org
 * @since       0.5
 */
class Joy_View_Stack
{
    protected $_stack;

    public function __construct($stack)
    {
        $this->_stack = $stack; 
    }

    public function __toString()
    {
        $render = Joy_Context_Response::getInstance()->getRender();

        $output = "";
        foreach ($this->_stack as $stack) {
            try {
                list($class, $params) = each($stack);
                $ref = new Joy_Reflection($class);
                $view = $ref->newInstance(array($params));

                $output .= $render->execute($view); 
            }
            catch(Exception $ex) {
                $output .= $ex->getMessage();
            }
        }

        return $output;
    }
}
